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mmshutdown Command When using the rcp and rsh commands for remote communication, a properly configured .rhosts file must exist in the root user’s home directory on each node in the GPFS cluster. If you have designated the use of a different remote communication program on either the mmcrcluster or the mmchcluster command, you must ensure: 1. Proper authorization is granted to all nodes in the GPFS cluster. 2. The nodes in the GPFS cluster can communicate without the use of a password, and without any extraneous messages. Examples 1. To stop GPFS on all nodes in the GPFS cluster, issue this command: mmshutdown -a The system displays information similar to: Thu Aug 12 13:10:40 EDT 2004: 6027-1341 mmshutdown: Starting force unmount of GPFS file systems. k164n05.kgn.com: forced unmount of /fs1 k164n04.kgn.ibm.com: forced unmount of /fs1 k164n06.kgn.ibm.com: forced unmount of /fs1 Thu Aug 12 13:10:45 EDT 2004: 6027-1344 mmshutdown: Shutting down GPFS daemons k164n04.kgn.ibm.com: Shutting down! k164n06.kgn.ibm.com: Shutting down! k164n05.kgn.ibm.com: Shutting down! k164n04.kgn.ibm.com: 'shutdown' command about to kill process 49682 k164n05.kgn.ibm.com: 'shutdown' command about to kill process 28194 k164n06.kgn.ibm.com: 'shutdown' command about to kill process Thu Aug 12 13:10:54 EDT 2004: 6027-1345 mmshutdown: Finished 2. To stop GPFS on only node k164n04, issue this command: mmshutdown -N k164n04 The system displays information similar to: mmshutdown -N k164n04 Thu Aug 12 13:12:06 EDT 2004: 6027-1341 mmshutdown: Starting force unmount of GPFS file systems k164n04: forced unmount of /fs1 Thu Aug 12 13:12:11 EDT 2004: 6027-1344 mmshutdown: Shutting down GPFS daemons k164n04: Shutting down! k164n04: 'shutdown' command about to kill process 65036 Thu Aug 12 13:12:20 EDT 2004: 6027-1345 mmshutdown: Finished See also “mmgetstate Command” on page 188 “mmlscluster Command” on page 198 “mmstartup Command” on page 270 Location /usr/lpp/mmfs/bin 266 GPFS: Administration and Programming Reference
mmsnapdir Command Name mmsnapdir - Creates and deletes invisible directories that connect to the snapshots of a GPFS file system, and changes the name of the snapshots subdirectory. Synopsis mmsnapdir Device {[-r | -a] [-s SnapDirName]} Or, mmsnapdir Device [-q] Description Use the mmsnapdir command to create or delete invisible directories that connect to the snapshots of a GPFS file system, and change the name of the snapshots subdirectory. Snapshots appear in a subdirectory in the root directory of the file system. If you prefer to access the snapshots from each file system directory rather than traversing through the root directory, you may create an invisible directory to make the connection by issuing the mmsnapdir command with the -a flag (see Example 1 on page 268). The -a flag of the mmsnapdir command creates an invisible directory in each normal directory in the active file system (they do not appear in directories in snapshots) that contains a subdirectory for each existing snapshot of the file system. These subdirectories correspond to the copy of the that directory in the snapshot with the same name. If the mmsnapdir command is issued while another snapshot command is running, the mmsnapdir command waits for that command to complete. For more information about GPFS snapshots, see Creating and maintaining snapshots of GPFS file systems in General Parallel File System: Advanced Administration Guide. Parameters Device Options The device name of the file system. File system names need not be fully-qualified. fs0 is just as acceptable as /dev/fs0. This must be the first parameter. -a Adds a snapshots subdirectory to all subdirectories in the file system. -q Displays current settings, if issued without any other flags. -r Reverses the effect of the -a option. All invisible snapshot directories are removed. The snapshot directory under the file system root directory is not affected. -s SnapDirName Changes the name of the snapshots subdirectory to SnapDirName. This affects both the directory in the file system root as well as the invisible directory in the other file system directories if the mmsnapdir -a command has been issued. Exit status 0 Successful completion. Chapter 8. GPFS commands 267
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General Parallel File System Admini
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Note: Before using this information
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Chapter 4. Managing disks . . . . .
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mmrestripefile Command . . . . . .
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viii GPFS: Administration and Progr
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x GPFS: Administration and Programm
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Table 1. Typographic conventions (c
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- The mmmount and mmumount commands
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- The local cluster no longer needs
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xviii GPFS: Administration and Prog
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2 GPFS: Administration and Programm
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Remote shell command: /usr/bin/rsh
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v A node being deleted cannot be th
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You may be able to tune your cluste
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The system displays information sim
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If it becomes necessary to stop GPF
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ecorded in the GPFS configuration f
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Checking and repairing a file syste
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-j scatter Block allocation type -D
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Restriping offers the opportunity t
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See the “mmdf Command” on page
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2. The TSM client code must be inst
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26 GPFS: Administration and Program
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gpfs3nsd 0903C1573F2AD7B6 /dev/sdb1
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12 % complete on Fri Feb 3 16:02:39
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suspended Indicates that data is to
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v You must identify the disks by th
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To disable quota management: 1. Iss
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During the normal operation of file
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The system displays output similar
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Each GPFS file or directory has an
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group::rwx- #effective:rw-- other::
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2. A Directory ACL is similar to th
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This ACL shows four ACL entries (an
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general suggestion is for the compu
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Table 4. GPFS commands (continued)
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mmadddisk Command mmadddisk Command
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mmadddisk Command Note: Rebalancing
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mmaddnode Command Name mmaddnode Ad
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mmaddnode Command See also “mmchc
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mmapplypolicy Command how the mmapp
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mmapplypolicy Command MIGRATED /fs1
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mmauth Command delete Deletes a clu
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mmauth Command mmauth: Propagating
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mmbackup Command Name mmbackup - Ba
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mmbackup Command Tue Mar 18 14:03:2
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mmchattr Command -m MetadataReplica
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mmchcluster Command Name mmchcluste
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mmchcluster Command Security You mu
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mmchconfig Command Name mmchconfig
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mmchconfig Command dmapiMountTimeou
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mmchconfig Command and search for n
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mmchdisk Command Name mmchdisk - Ch
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mmchdisk Command resume Informs GPF
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mmcheckquota Command Name mmcheckqu
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mmcheckquota Command 55 % complete
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mmchfileset Command Examples This c
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mmchfs Command If your file system
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mmchfs Command When considering dat
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mmchmgr Command GPFS: 6027-628 Send
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mmchnsd Command Options NONE DiskNa
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mmchpolicy Command Name mmchpolicy
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mmcrcluster Command Name mmcrcluste
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mmcrcluster Command If your primary
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mmcrfileset Command Name mmcrfilese
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mmcrfs Command Name mmcrfs - Create
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mmcrfs Command Options other disk)
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mmcrfs Command -z {yes | no} Enable
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mmcrnsd Command Name mmcrnsd - Crea
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mmcrnsd Command Note: This name can
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mmcrnsd Command Location /usr/lpp/m
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mmcrsnapshot Command Options NONE I
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mmcrvsd Command Name mmcrvsd - Crea
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mmcrvsd Command Options dataOnly In
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mmcrvsd Command See also “mmcrnsd
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mmdefedquota Command -u Specifies t
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mmdefquotaoff Command mmlsquota -d
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mmdefquotaon Command Security You m
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mmdefragfs Command Name mmdefragfs
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mmdefragfs Command gpfs60nsd 50688
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mmdelacl Command “mmputacl Comman
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mmdeldisk Command -F DescFile A fil
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mmdelfileset Command Name mmdelfile
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mmdelfileset Command 88 % complete
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mmdelfs Command Examples To delete
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mmdelnode Command Exit status 0 Suc
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mmdelnsd Command Options NONE Exit
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mmdelsnapshot Command When using th
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mmdf Command Exit status 0 Successf
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mmeditacl Command Name mmeditacl -
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mmeditacl Command Exit status 0 Suc
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mmedquota Command Group Name or gro
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mmexportfs Command Name mmexportfs
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mmfsck Command Name mmfsck - Checks
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mmfsck Command -n Specifies a no re
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mmfsck Command See also “mmcheckq
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mmfsctl Command v Modifications to
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mmfsctl Command lunA2 FlashCopy tar
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mmgetacl Command Parameters Filenam
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mmgetstate Command Name The mmgetst
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mmgetstate Command See also “mmch
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mmimportfs Command Parameters Devic
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mmlinkfileset Command Name mmlinkfi
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mmlsattr Command Name mmlsattr - Qu
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mmlscluster Command Name mmlscluste
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mmlsconfig Command Name mmlsconfig
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mmlsdisk Command Name mmlsdisk - Di
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mmlsdisk Command disk driver sector
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mmlsfileset Command Name mmlsfilese
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mmlsfileset Command 3. These comman
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mmlsfs Command -o Additional mount
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mmlsmgr Command Name mmlsmgr - Disp
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mmlsmount Command Name mmlsmount -
Page 236 and 237: mmlsnsd Command Name mmlsnsd - Disp
Page 238 and 239: mmlsnsd Command gpfs1 gpfs1nsd 0972
Page 240 and 241: mmlspolicy Command mmlspolicy fs2 -
Page 242 and 243: mmlsquota Command When a quota mana
Page 244 and 245: mmlssnapshot Command Name mmlssnaps
Page 246 and 247: mmmount Command Name mmmount - Moun
Page 248 and 249: mmpmon Command Name mmpmon - Manage
Page 250 and 251: mmpmon Command Use of the -i flag i
Page 252 and 253: mmpmon Command bytes written: 13946
Page 254 and 255: mmputacl Command Options -d Specifi
Page 256 and 257: mmquotaoff Command Name mmquotaoff
Page 258 and 259: mmquotaon Command Name mmquotaon -
Page 260 and 261: mmremotecluster Command Name mmremo
Page 262 and 263: mmremotecluster Command 2. This com
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Page 266 and 267: mmrepquota Command Name mmrepquota
Page 268 and 269: mmrepquota Command *** Report for U
Page 270 and 271: mmrestorefs Command Exit status 0 S
Page 272 and 273: mmrestripefile Command Name mmrestr
Page 274 and 275: mmrestripefile Command See also “
Page 276 and 277: mmrestripefs Command Assuming that
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Page 280 and 281: mmrpldisk Command The disk descript
Page 282 and 283: mmrpldisk Command See also “mmadd
Page 284 and 285: mmsanrepairfs Command Repairing hyp
Page 288 and 289: mmsnapdir Command nonzero A failure
Page 290 and 291: mmstartup Command Name mmstartup -
Page 292 and 293: mmumount Command Name mmumount - Un
Page 294 and 295: mmunlinkfileset Command Name mmunli
Page 296 and 297: mmunlinkfileset Command See also
Page 298 and 299: Table 9. GPFS programming interface
Page 300 and 301: gpfs_close_inodescan() Subroutine N
Page 302 and 303: gpfs_cmp_fssnapid() Subroutine Loca
Page 304 and 305: gpfs_fcntl() Subroutine Name gpfs_f
Page 306 and 307: gpfs_fcntl() Subroutine fcntlArg.po
Page 308 and 309: gpfs_fputattrs() Subroutine Name gp
Page 310 and 311: gpfs_free_fssnaphandle() Subroutine
Page 312 and 313: gpfs_fssnap_id_t Structure Name gpf
Page 314 and 315: gpfs_get_fsname_from_fssnaphandle()
Page 316 and 317: gpfs_get_fssnaphandle_by_name() Sub
Page 318 and 319: gpfs_get_fssnaphandle_by_path() Sub
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Page 322 and 323: gpfs_get_snapdirname() Subroutine N
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Page 326 and 327: gpfs_getacl() Subroutine Error stat
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Page 330 and 331: gpfs_ifile_t Structure Name gpfs_if
Page 332 and 333: gpfs_igetattrs() Subroutine GPFS_E_
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gpfs_igetstoragepool() Subroutine E
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gpfs_iopen() Subroutine Exceptions
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gpfs_iread() Subroutine EPERM The c
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gpfs_ireaddir() Subroutine Examples
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gpfs_ireadlink() Subroutine Locatio
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gpfs_ireadx() Subroutine offset On
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gpfs_next_inode() Subroutine Name g
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gpfs_opaque_acl_t Structure Name gp
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gpfs_open_inodescan() Subroutine No
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gpfs_prealloc() Subroutine Exceptio
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gpfs_putacl() Subroutine Exceptions
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gpfs_quotactl() Subroutine Q_SETQUO
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gpfs_quotaInfo_t Structure Name gpf
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gpfs_seek_inode() Subroutine Locati
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gpfsAccessRange_t Structure Name gp
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gpfsClearFileCache_t Structure Name
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gpfsDataShipMap_t Structure partiti
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gpfsDataShipStart_t Structure flag
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gpfsDataShipStop_t Structure Name g
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gpfsFreeRange_t Structure Name gpfs
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gpfsGetReplication_t Structure Name
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gpfsGetSnapshotName_t Structure Nam
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gpfsMultipleAccessRange_t Structure
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gpfsRestripeData_t Structure Name g
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gpfsSetReplication_t Structure rese
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366 GPFS: Administration and Progra
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mmsdrbackup User exit mmsdrbackup U
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syncfsconfig User exit Name syncfsc
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GPFS exceptions and limitations to
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2455 South Road, Poughkeepsie, NY 1
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metadataOnly Indicates that the dis
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v manager | client - Indicates whet
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v For AIX nodes, see Installing the
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RPM at www.rpm.org/ The Internet En
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commands (continued) mmchfileset 10
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file systems (continued) creating 1
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mmchattr 19, 81 mmchcluster 6, 84 m
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setting access control lists 46 sna
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